It reads from a distance as a slight swelling in the landscape, but step closer and the geometry becomes deliberate: a circular, round-topped mound some 25 metres in diameter and 3.2 metres high, ringed by an inner fosse, which is essentially a ditch dug to define and separate the mound, and then by an external bank beyond that. This is a bowl-barrow, a type of funerary monument associated with the Bronze Age, and its form here is still legible despite the centuries pressing down on it.

The site was recorded and described in archaeological literature by Healy in 1975 and Turner in 1983, and later compiled as part of the national Sites and Monuments Record by Geraldine Stout and Padraig Clancy. The inner fosse measures about 5 metres wide and 0.5 metres deep, with the external bank running to roughly 2.5 metres wide at the same height. The southern side has suffered, where a field boundary running east to west has cut through the bank, truncating it and leaving that portion of the monument incomplete. Just to the north-east of the barrow stands a single standing stone, recorded separately in the monuments register, which adds a further layer of prehistoric intention to the hilltop. Whether the stone and the barrow were erected as part of the same episode of activity, or accumulated across different periods, is not established by the available record.

Glencullen village sits in the Dublin Mountains, and the old chapel mentioned in the site notes serves as a useful landmark for orienting yourself before the climb. The barrow sits above the village on the hill crest, so the approach involves some uphill walking over field ground. The monument is not enclosed or formally managed as a visitor site, so the experience is one of open countryside rather than any kind of presented heritage. The field boundary damage on the southern side is visible on inspection, and the standing stone to the north-east is worth seeking out as a companion feature. The surrounding high ground offers broad views across the Dublin Hills, which at least helps explain why someone, a very long time ago, chose this particular ridge.